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Objective To explore the relationship between the expression of pS2 protein and the clinicopathological parameters in breast cancer and to evaluate the value of pS2 as a prognostic factor for breast carcinoma and a predictive factor for response to endocrine therapy. Methods Expression levels of pS2 protein, estrogen receptor (ER) and progestogen receptor (PR) in tissues from 75 cases of breast cancer were detected by immunohistochemical assay. The relationship of pS2 protein expression with patient age, menopausal status, tumor size, metastasis to the axillary lymph nodes, pathological types, ER and PR was analyzed. Results pS2 protein, expressed in 33.3% of breast carcinomas, was correlated with patient age and pathological types, but was not correlated with tumor size. The positive rate of pS2 protein before menopause was higher than that after menopause, but no significant difference was found. Similarly, higher positive rate of pS2 protein was found in patients with metastasis to axillary lymph nodes than those without, but no significant difference was found. pS2 expression was correlated with ER and PR, but they were not perfectly consistent. Conclusion In breast cancer, pS2 protein expression, associated with some clinical factors and pathological features, is a good prognostic factor. pS2 expression may be a reasonable index for endocrinotherapy of breast carcinoma, but the detection of pS2 protein can not be employed in place of the detection of ER and PR.
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OBJECTIVE: To study the effects of extracts of the seed of Litchi (ESL) on the expression of estradiol receptor (ER) and progestogen receptor (PR) in mammary tissue and apoptosis of mammary glandular cells in rats with hyperplasia of mammary glands (HMG). METHODS: The HMG model was induced by intramuscularly injecting with 0.5 mg?kg-1 estradiol benzoate for 25 days, subsequently intramuscularly injecting with 4 mg?kg-1 progesterone for 5 days. 60 healthy nonfertile SD rats were divided into normal group, model group, rujieping group and high-dose, medium-dose and low-dose ESL groups, treating with distilled water, distilled water, 3.3 g?kg-1 Rujieping and 44, 22, 11 g?kg-1 ESL via i.g. gtt once a day for 30 days, respectively. Immunohistochemical method was applied to observe the expression of ER and PR in rat mammary tissue and apoptosis of mammary glandular cells. Uterus index was also calculated. RESULTS: High-dose and medium-dose of ESL can inhibit the expression of ER and PR of mammary gland in HMG rats and induce apoptosis of mammary glandular cells(P
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0.05). CONCLUSION: Only partial of the breast cancer tissues were seen of expression changes in ER, PR, C-erbB-2 and p53 after neoadjuvant chemotherapy, but on the whole, the neoadjuvant chemotherapy has no significant influence on the expressions of ER, PR, C-erbB-2 and P53.
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Objective To detect estrogen receptor and DNA index in breast cancer by flow cytometry. Methods 32 cases of fresh specimens of breast cancer resected by operation were used in this study. Single cells suspension was prepared from those specimens, and estrogen receptor expression was analyzed by flow cytometry. At the same time, the status of ploid and S phase cell ratio were determined. Results Flow cytometry analysis could measure the expression level of estrogen receptor in the fresh breast cancer specimens, which was more sensitive and needed less volume of tumor tissue compared with immuohistochemical method. The information on the status of ploid and S phase cell ratio were simultaneously obtained. Conclusion The detection of estrogen receptor in breast cancers by flow cytometry was more helpful for evaluating prognosis and selecting treatment.
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Objecitve To observe the relationship between the expressions of the estrogen receptor (ER),progestogen receptor (PR) and tumor infiltration and metastasis in thyroid cancer.Methods By using immunohistochemical method to study the relationship between the expressions of ER and PR in 100 cases of thyroid carcinamas and 28 cases of benign thyroid lesions.Results The positive rates of ER and RP expression were 67 0% and 62 0% respectively in thyroid carcinomas,it had correlation with well differentiation and type of histology but positive expression did not relate to age and sex.The positive rates of ER and PR in the non-metastasized group were 75 4% and 70 5% respectively;significantly higher than that of the metastasized group which were 53 8% and 48 7% respectively (P
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AIM: To observe the therapeutic action of Guizhifuling Capsule (Ramuluo Cinnamomi, Poria, Cortex moutan, Semen Persicae, etc.)on hyperplasia of mammary glands in rast, and to explore the new therapeutic effectiveness and its mechanism. METHODS: To inject extrinsic E2 and Pt into muscle to reproduce rats model of hyperplasia of mammary glands, to observe the morphologic changes of nipple in every group, determine extradiol and progesterone content on plasma in experimental rats by radio immunoassay, and study the changes of ER and PR by immunohistochemical method. RESULTS: Compared with the model group, Guizhi Fuling Capsule can markedly abate papilledema, proliferation of lobule, acinus and duct in mammary glands, reduce obviously changes of blood, estradiol on plasma, the ER and PR content of mammary glands and increase progesterone. CONCLUSION:Cuizhi Fuling Capsules have the good therapeutic action on hyperplasia of mammary glands in rats, its mechanism is related to correcting changes of blood, adjusting the blood concentration of sexual hormone in experimental rats and its expression of receptor.